Malicious PDF — malware analysis report

Static analysis result for SHA-256 c73601f45a894789…

MALICIOUS

PDF

35.6 KB Created: 2021-05-24 01:50:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 252e73b7e9be041c56083686230d1f41 SHA-1: 51bf4b5b68c0726c8c6d91f00f8717b16523dccc SHA-256: c73601f45a8947892f30e60e475e0cd9d93414fdddbd5b01a4620d72306dd24e
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The document body and embedded URLs strongly suggest a lure for downloading a "free Minecraft generator" or similar game hacks. The presence of multiple links to external domains, combined with a heuristic flagging an external URI and a machine learning classifier indicating maliciousness, points to a phishing or malware distribution attempt. The document also contains a visual download button lure and a callback lure, further supporting a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

Heuristics 4

  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.xyz/app/479516143/minecraft-free-app-game-hack PDF link annotation
    • http://reggieslockandkey.com/images/hack-version-of-coin-master-apk-download_GM406889139.pdfIn PDF document text
    • http://reggieslockandkey.com/images/coin-master-free-spins-apk-2021_GM406889139.pdfIn PDF document text
    • https://reggieslockandkey.com/images/appsmob-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://reggieslockandkey.com/images/minecraft-bedrock-edition-download-pc-free_GM479516143.pdfIn PDF document text
    • https://reggieslockandkey.com/images/play-full-version-of-minecraft-for-free-no-download_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000032fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32FA 24816 bytes
SHA-256: a50390580af5f5f628302de2718ddeda784818a8c9032282d6ecd8c501a768f3
font_01_sfnt_off00006ba2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BA2 17744 bytes
SHA-256: e23e7214a96fe4b3d719dc72cd7ebffceaaf9130bd2cd2fd107204a9a2f0c3c7

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